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The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'. The structure of the seabed of the global ocean is governed by plate tectonics. Most of the ocean is very deep, where the seabed is known as the abyssal plain. Seafloor spreading creates ...
Oceanic trenches are prominent, long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers (30 to 60 mi) wide and 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor, but can be thousands of kilometers in length.
Also sea floor or ocean floor. The bottom of a sea or ocean. As with land terrain, the ocean floor may have ridges, mountains, valleys, and plains. seaboard Any extensive region of land adjacent to the sea, broadly synonymous with coast or coastline. [2] seamount
Along with this, if the seafloor spreading rate in an ocean basin increases, then the average depth in that ocean basin decreases and therefore its volume decreases (and vice versa). This results in global eustatic sea level rise (fall) because the Earth is not expanding. Two main drivers of sea level variation over geologic time are then ...
Marine geology or geological oceanography is the study of the history and structure of the ocean floor. It involves geophysical, geochemical, sedimentological and paleontological investigations of the ocean floor and coastal zone. Marine geology has strong ties to geophysics and to physical oceanography.
The ocean floor is not all flat but has submarine ridges and deep ocean trenches known as the hadal zone. [6] For comparison, the pelagic zone is the descriptive term for the ecological region above the benthos, including the water column up to the surface.
Debris from the Titan was found on the ocean floor four days later. All five crew members -- including OceanGate CEO Stockton Rush -- were determined to have died in a catastrophic implosion.
Abyssal plain – Flat area on the deep ocean floor; Ait – Islands found on the River Thames and its tributaries in England; Alluvial fan – Fan-shaped deposit of sediment; Anabranch – A section of a river or stream that diverts from the main channel and rejoins it downstream. Arch – Arch-shaped natural rock formation